<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <h3>差值表达式</h3>
        <h3>{{msg}}</h3>
        <h3>{{count}}</h3>
        <h3>v-text</h3>
        <h3 v-text="msg"></h3>
        <h3>v-model</h3>
        <input type="text" v-model="msg">
        <input type="number" v-model="count">
    </div>
    <script src="vue.js"></script>
    <script>
        let vm = new Vue({
            el: '#app',
            data: {
                msg: 'hello',
                count: 10
            }
        });
    </script>
</body>
</html>